General

  • Target

    99d7b0b82235515c6fa26b24044ef57c3dd4fdb845ee3630ca3d0589e89da751

  • Size

    215KB

  • Sample

    221219-clep9aea77

  • MD5

    d5dd1af970503b683a685c0fae23faa5

  • SHA1

    9daca0aa9643391b468e6ac781d79bd5de11fdb7

  • SHA256

    99d7b0b82235515c6fa26b24044ef57c3dd4fdb845ee3630ca3d0589e89da751

  • SHA512

    d07fc28b34f0c3eb6df0af598b98135b64ccebeccce6068bd0f84690637c43faee65a4e7b446f22535b5c9f09e903227f62e09b936913a536725352486c50cca

  • SSDEEP

    3072:U363Lypc5daRSa05jlkgBo9pk8GAgZrr2x9aNRAtOba+G8EwjcbImdzmuX:UK3LAc5X5jlkgslGzZmxc0z8EwjcbXF

Malware Config

Extracted

Family

tofsee

C2

svartalfheim.top

jotunheim.name

Targets

    • Target

      99d7b0b82235515c6fa26b24044ef57c3dd4fdb845ee3630ca3d0589e89da751

    • Size

      215KB

    • MD5

      d5dd1af970503b683a685c0fae23faa5

    • SHA1

      9daca0aa9643391b468e6ac781d79bd5de11fdb7

    • SHA256

      99d7b0b82235515c6fa26b24044ef57c3dd4fdb845ee3630ca3d0589e89da751

    • SHA512

      d07fc28b34f0c3eb6df0af598b98135b64ccebeccce6068bd0f84690637c43faee65a4e7b446f22535b5c9f09e903227f62e09b936913a536725352486c50cca

    • SSDEEP

      3072:U363Lypc5daRSa05jlkgBo9pk8GAgZrr2x9aNRAtOba+G8EwjcbImdzmuX:UK3LAc5X5jlkgslGzZmxc0z8EwjcbXF

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner payload

    • Creates new service(s)

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks